「Android」使用SAF打开指定目录 android

「Android」使用SAF打开指定目录配置读写权限 AndroidManifest

使用SAF打开指定目录使用SAF打开微信下载目录Demo

void openWeChatDownloadDirectory() { Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT); Uri weChatUri = Uri.parse("content://com.android.externalstorage.documents/document/primary%3AAndroid%2Fdata%2Fcom.tencent.mm%2FMicroMsg%2FDownload"); intent.putExtra(DocumentsContract.EXTRA_INITIAL_URI, weChatUri); intent.setType("*/*"); String[] mimeTypes = { "application/msword", "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "application/vnd.ms-powerpoint", "application/vnd.openxmlformats-officedocument.presentationml.presentation", "application/vnd.ms-excel", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "application/pdf" }; intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes); startActivityForResult(intent, REQUEST_CODE); }

EXTRA_INITIAL_URI

/** * Sets the desired initial location visible to user when file chooser is shown. * * 【「Android」使用SAF打开指定目录】Applicable to {@link Intent} with actions: * *{@link Intent#ACTION_OPEN_DOCUMENT} *{@link Intent#ACTION_CREATE_DOCUMENT} *{@link Intent#ACTION_OPEN_DOCUMENT_TREE} * * * Location should specify a document URI or a tree URI with document ID. If * this URI identifies a non-directory, document navigator will attempt to use the parent * of the document as the initial location. * * The initial location is system specific if this extra is missing or document navigator * failed to locate the desired initial location. */ public static final String EXTRA_INITIAL_URI = "android.provider.extra.INITIAL_URI";

ACTION_OPEN_DOCUMENT

/** * Activity Action: Allow the user to select and return one or more existing * documents. When invoked, the system will display the various * {@link DocumentsProvider} instances installed on the device, letting the * user interactively navigate through them. These documents include local * media, such as photos and video, and documents provided by installed * cloud storage providers. * * Each document is represented as a {@code content://} URI backed by a * {@link DocumentsProvider}, which can be opened as a stream with * {@link ContentResolver#openFileDescriptor(Uri, String)}, or queried for * {@link android.provider.DocumentsContract.Document} metadata. * * All selected documents are returned to the calling application with * persistable read and write permission grants. If you want to maintain * access to the documents across device reboots, you need to explicitly * take the persistable permissions using * {@link ContentResolver#takePersistableUriPermission(Uri, int)}. * * Callers must indicate the acceptable document MIME types through * {@link #setType(String)}. For example, to select photos, use * {@code image/*}. If multiple disjoint MIME types are acceptable, define * them in {@link #EXTRA_MIME_TYPES} and {@link #setType(String)} to * {@literal *}/*. * * If the caller can handle multiple returned items (the user performing * multiple selection), then you can specify {@link #EXTRA_ALLOW_MULTIPLE} * to indicate this. * * Callers must include {@link #CATEGORY_OPENABLE} in the Intent to obtain * URIs that can be opened with * {@link ContentResolver#openFileDescriptor(Uri, String)}. * * Callers can set a document URI through * {@link DocumentsContract#EXTRA_INITIAL_URI} to indicate the initial * location of documents navigator. System will do its best to launch the * navigator in the specified document if it's a folder, or the folder that * contains the specified document if not. * * Output: The URI of the item that was picked, returned in * {@link #getData()}. This must be a {@code content://} URI so that any * receiver can access it. If multiple documents were selected, they are * returned in {@link #getClipData()}. * * @see DocumentsContract * @see #ACTION_OPEN_DOCUMENT_TREE * @see #ACTION_CREATE_DOCUMENT * @see #FLAG_GRANT_PERSISTABLE_URI_PERMISSION */ @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) public static final String ACTION_OPEN_DOCUMENT = "android.intent.action.OPEN_DOCUMENT";

常见App的目录微信
微信7.0.15及以上版本：
图片及视频：文件管理 > 浏览 > 我的手机 > Pictures > WeiXin
文档：文件管理 > 浏览 > 我的手机（或存储卡） > Android > data > com.tencent.mm > MicroMsg > Download
QQ
QQ8.2.8及以上版本：
图片：文件管理 > 浏览 > 我的手机（或存储卡） > tencent > QQ_Images
视频：文件管理 > 浏览 > 我的手机（或存储卡） > Movies
文件：文件管理 > 浏览 > 我的手机（或存储卡） > Android > data > com.tencent.mobileqq > Tencent > QQfile_recv
QQ浏览器
文件管理 > 浏览 > 我的手机 > QQBrowser
自带浏览器
文件管理 > 浏览 > 我的手机（或存储卡） > Download，进入Download目录以及Download/browser下查找下载的文件
百度云盘
文件管理 > 浏览 > 我的手机（或存储卡） > BaiduNetdisk
WPS
文件管理 > 浏览 > 我的手机 > Android > data > cn.wps.moffice_eng目录下查找下载的文件